Index: /CKEditor/branches/prototype/_source/plugins/removeformat/plugin.js
===================================================================
--- /CKEditor/branches/prototype/_source/plugins/removeformat/plugin.js	(revision 2853)
+++ /CKEditor/branches/prototype/_source/plugins/removeformat/plugin.js	(revision 2854)
@@ -100,4 +100,7 @@
 					while ( currentNode )
 					{
+						if ( currentNode.getName() == 'img' && currentNode.getAttribute( '_cke_protected_html' ) )
+							break;
+
 						// If we have reached the end of the selection, stop looping.
 						if ( currentNode.equals( endNode ) )